Message Handling

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Chapter 5

• Message Handling

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Messages

• Messages used to command other processors.
• To request or deliver information.
• Every able addressable object has an attached
  unique message queue.
• Messages are sent to recipient's message queue.
• Sent or received messages often end up in logs.

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Message Use

• Most messaging is internal (called
  system-to-system).
• AS/400 communicates with users via messages.
• Users can communicate to other users via
  messages.

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Common Message Delivery Modes
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Message Text Levels

• Level one always displayed first.
• Shown at message line of screen.
• Use FI to display second level (or level 2)
  message - more descriptive.

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Predefined Message
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Two Major Message Types

• Informational
• Tells you something.
• Inquiry
• Requires an answer.

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Example Inquiry Message
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Messages Further Separated Into Two Types

• Predefined messages
• Impromptu message

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Predefined Messages

• Commonly used messages.
• Messages stored in message file(s).

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Example Predefined Message
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Predefined Messages Have a Definite Structure

• Identifier
• Message Text-Level 1
• Message Text-Level 2
• Cause text

• Recovery text
• Message variables
• Message reply variables
• Severity

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Severity Code
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Severity Codes
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Impromptu Messages

• Free-form communication between one or more
  persons.
• SNDMSG (Send Message).
• SNDBRKMSG (Send Break Message).

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Message Queues
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Working With Message Queues
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Working With Message Queues
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Message Files
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Message Files
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Break Inquiry Message
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Level Two Message
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Selecting a Predefined Message
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Message CPF2817 Detail
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Message CPF2817 Detail
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Details of a Job Log
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Message Related Commands

• Create and change messages queues (CRTMSGQ,
  CHGMSGQ, WRKMSGQ).
• Change message descriptions (CHGMSGD).
• Remove message descriptions (RMVMSGD).
• Create message files (CRTMSGF).
• Delete message files (DLTMSGF).
• Add message descriptions (ADDMSGD).

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Message Related Commands

• Send impromptu messages (SNDMSG, SNDBRKMSG).
• Display messages and print messages descriptions
  (DSPMSG, DSPMSGD, WRKMSGF).
• Add default replies for predefined messages using
  the system reply list (WRKRPYLE).

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Message Menu
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Sending Impromptu or User Messages

• There are two commands
• Send Message (SNDMSG)
• Send Break Message (SNDBRKMSG)

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SNDMSG Command Screen
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Sending to Multiple Users

• SNDMSG MSG('Time to start our meeting in the
  Computer Room.') TOMSGQ(JUNG JUAN JENNIFER
  JUSTIN)

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Sending Inquiry Messages

• SNDMSG MSG('I need to shut down the system.
  How much longer are you going to use it?')
  TOUSR(LUIS) MSGTYPE(INQ)

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Inquiry Message Screen
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SNDBRKMSG Command Screen
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Sending Messages to Special Users

• The SNDMSG and SNDBRKMSG commands can send to,
• TOUSR or TOMSGQ Parameter values
• SYSOPR - system operator
• ALLUSR - all users
• ALLACT - all users currently signed on (NOTE
  NOT SNDBRKMSG command)
• ALLWS - all workstations

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System Reply List
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WRKMSGD Screen
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Message CPA4002 Text
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MSGDTA Layout
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Change Reply List

• ADDRPYLE SEQNBR(12) MSGID(CPA4002) RPY(RQD)
  CMPDTA(QSYSPRT 21)
•  
•  
• ADDRPYLE SEQNBR(14) MSGID(CPA4002) RPY(G)

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Resulting Reply List
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Reply List Commands
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Work With Reply List